C语言：预处理后的源文件

Question

Am using visual cl.exe compiler to get an intermediate file after preprocessing. all the #define are removed. is there any possibility to keep them in the intermediate file?

Answer 1

No. One of the tasks of the preprocessing is to remove all #define and others preprocessing stuffs the #s and creates a plain c file.

What you can do: use the /E or /P to output the preprocess to the output or file: http://blog.kowalczyk.info/article/clexe-cmd-line-args.html

Answer 2

#define is a preprocessor instruction so obviously it won't be present in a preprocessed source file. Every occurrence of a preprocessor constant will be replaced with its actual value by the preprocessor.